The invention provides a composition containing hyaluronic acid (HA) or a pharmaceutically-acceptable salt thereof preserved with a cationic preservative and related methods. In one embodiment, the pharmaceutically-acceptable salt is sodium hyaluronate. In another embodiment, the cationic preservative includes benzalkonium chloride (BAK).

The disclosure features novel lipids and compositions involving the same. Nanoparticle compositions include a novel lipid as well as additional lipids such as phospholipids, structural lipids, and PEG lipids. Nanoparticle compositions further including therapeutic and/or prophylactics such as RNA are useful in the delivery of therapeutic and/or prophylactics to mammalian cells or organs to, for example, regulate polypeptide, protein, or gene expression.

The disclosure features novel lipids and compositions involving the same. Nanoparticle compositions include a novel lipid as well as additional lipids such as phospholipids, structural lipids, and PEG lipids. Nanoparticle compositions further including therapeutic and/or prophylactics such as RNA are useful in the delivery of therapeutic and/or prophylactics to mammalian cells or organs to, for example, regulate polypeptide, protein, or gene expression.

The invention provides a composition containing hyaluronic acid (HA) or a pharmaceutically-acceptable salt thereof preserved with a cationic preservative and related methods. In one embodiment, the pharmaceutically-acceptable salt is sodium hyaluronate. In another embodiment, the cationic preservative includes benzalkonium.

A composition is described comprising an epoxy resin and a dicyandiamide salt comprising an anion selected from sulfonate or phosphonate. In typical embodiments, the dicyandiamide cation has the formula: wherein one or more of R1, R2, R3, and R4 are hydrogen. Also described is a method of bonding, an adhesive bonded article, and a method of synthesizing a dicyandiamide salt.

##STR00001##

A composition is described comprising an epoxy resin and a dicyandiamide salt comprising an anion selected from sulfonate or phosphonate. In typical embodiments, the dicyandiamide cation has the formula: wherein one or more of R1, R2, R3, and R4 are hydrogen. Also described is a method of bonding, an adhesive bonded article, and a method of synthesizing a dicyandiamide salt.

##STR00001##

The disclosure features novel lipids and compositions involving the same. Nanoparticle compositions include a novel lipid as well as additional lipids such as phospholipids, structural lipids, and PEG lipids. Nanoparticle compositions further including therapeutic and/or prophylactics such as RNA are useful in the delivery of therapeutic and/or prophylactics to mammalian cells or organs to, for example, regulate polypeptide, protein, or gene expression.

The disclosure features novel lipids and compositions involving the same. Nanoparticle compositions include a novel lipid as well as additional lipids such as phospholipids, structural lipids, and PEG lipids. Nanoparticle compositions further including therapeutic and/or prophylactics such as RNA are useful in the delivery of therapeutic and/or prophylactics to mammalian cells or organs to, for example, regulate polypeptide, protein, or gene expression.

The disclosure features novel lipids and compositions involving the same. Nanoparticle compositions include a novel lipid as well as additional lipids such as phospholipids, structural lipids, and PEG lipids. Nanoparticle compositions further including therapeutic and/or prophylactics such as RNA are useful in the delivery of therapeutic and/or prophylactics to mammalian cells or organs to, for example, regulate polypeptide, protein, or gene expression.

The disclosure features novel lipids and compositions involving the same. Nanoparticle compositions include a novel lipid as well as additional lipids such as phospholipids, structural lipids, and PEG lipids. Nanoparticle compositions further including therapeutic and/or prophylactics such as RNA are useful in the delivery of therapeutic and/or prophylactics to mammalian cells or organs to, for example, regulate polypeptide, protein, or gene expression.